05623109 is referenced by 30 patents and cites 13 patents.

Plant operating conditions 1, apparatus operating conditions 2 and environment conditions 3 are accumulated, combined and put together as a set of plant status variables 8 -through a monitor 6, while water chemistry information 4 is accumulated as another set of plant status variables 9. The set of status variables 8 is updated and the past data are accumulated in the set of status variables 9. Periodical inspection data 5 are also accumulated in the set of status variables 9 along with the water chemistry information 4. The set 9 is compressed and stored as a plant chart 11 such as a personal clinical chart. A status variable prediction 12 is performed in consideration of the personality of a plant. Both data of the sets 8 and 10 are compared with each other by comparison means 13. If both the data nearly coincide with each other, the plant is diagnosed to be normal and, if not, it is diagnosed to be abnormal. When the plant is diagnosed to be abnormal, an abnormal apparatus and an abnormal factor are identified.

Title
Plant monitoring and diagnosing method and system, as well as plant equipped with the system
Application Number
8/247039
Publication Number
5623109
Application Date
May 20, 1994
Publication Date
April 22, 1997
Inventor
Izumi Yamada
Ibaraki-ken
JP
Takaharu Fukuzaki
Hitachi
JP
Fuminobu Takahashi
Katsuta
JP
Haruo Fujimori
Hitachi
JP
Shunsuke Uchida
Hitachi
JP
Agent
Bardehle Pagenberg Dost Altenburg Frohwitter Geissler & Partners
Assignee
Hitachi
JP
IPC
G21C 7/36
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